Most phones 7 years old or older, which includes the iPhone 5 and iPhone 5S. There is a list here of all phones that will continue working on the AT&T 4G network. Some phones, such as the iPhone 12 and up will also work on the 5G networks .
Read moreWhen was 5G switched?
In the 5G IoT chipset arena, as of April 2019 there were four commercial 5G modem chipsets and one commercial processor/platform, with more launches expected in the near future. On March 6, 2020 , the first-ever all-5G smartphone Samsung Galaxy S20 was released.
Read moreIs AT&T switching over to 5G?
AT&T plans to start turning on this new network over the next few months as the equipment becomes available . The company has previously said it plans to cover 200 million people with 5G service over its midband spectrum by the end of next year.
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